❓ В чём разница между @Component

Библиотека собеса по Java | вопросы с собеседований

❓ В чём разница между @Component, @Service и @Repository в Spring?

Все три аннотации делают класс Spring-бином, но различаются по семантике:

— @Component: базовая аннотация, универсальный бин без конкретной роли.
— @Service: указывает, что класс содержит бизнес-логику. Используется для читаемости и логической группировки.
— @Repository: помечает DAO-слой (доступ к данным). Плюс Spring автоматически оборачивает методы в блок try-catch для DataAccessException.

⚠️ Разница не в функциональности, а в намерении разработчика. Spring их обрабатывает по-разному только для

@Repository

(например, при работе с базой данных).

🐸

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Create: 2025-04-01
Last Update: 2025-05-20 22:27:57

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